chore(publicip): refactoring

- Exported `Fetcher` interface
- Inject `Fetcher` to publicip loop and updaters
- Get public IP and information at the same time
- Only query ipinfo.io
- Make `MultiInfo` part of the `Fetch` object

internal/provider/privado/updater/location.go

@@ -3,19 +3,18 @@ package updater
 import (
 	"context"
 	"net"
-	"net/http"
 
 	"github.com/qdm12/gluetun/internal/models"
-	"github.com/qdm12/gluetun/internal/publicip"
+	"github.com/qdm12/gluetun/internal/provider/common"
 )
 
-func setLocationInfo(ctx context.Context, client *http.Client, servers []models.Server) (err error) {
+func setLocationInfo(ctx context.Context, fetcher common.IPFetcher, servers []models.Server) (err error) {
 	// Get public IP address information
 	ipsToGetInfo := make([]net.IP, 0, len(servers))
 	for _, server := range servers {
 		ipsToGetInfo = append(ipsToGetInfo, server.IPs...)
 	}
-	ipsInfo, err := publicip.MultiInfo(ctx, client, ipsToGetInfo)
+	ipsInfo, err := fetcher.FetchMultiInfo(ctx, ipsToGetInfo)
 	if err != nil {
 		return err
 	}

internal/provider/privado/updater/servers.go

@@ -68,7 +68,7 @@ func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 
 	servers = hts.toServersSlice()
 
-	if err := setLocationInfo(ctx, u.client, servers); err != nil {
+	if err := setLocationInfo(ctx, u.ipFetcher, servers); err != nil {
 		return nil, err
 	}
 

internal/provider/privado/updater/updater.go

@@ -1,22 +1,20 @@
 package updater
 
 import (
-	"net/http"
-
 	"github.com/qdm12/gluetun/internal/provider/common"
 )
 
 type Updater struct {
-	client           *http.Client
+	ipFetcher        common.IPFetcher
 	unzipper         common.Unzipper
 	parallelResolver common.ParallelResolver
 	warner           common.Warner
 }
 
-func New(client *http.Client, unzipper common.Unzipper,
+func New(ipFetcher common.IPFetcher, unzipper common.Unzipper,
 	warner common.Warner, parallelResolver common.ParallelResolver) *Updater {
 	return &Updater{
-		client:           client,
+		ipFetcher:        ipFetcher,
 		unzipper:         unzipper,
 		parallelResolver: parallelResolver,
 		warner:           warner,